Hi Hans, thanks for your response. I don't consider [bsaylor/svf~] a good alternative, it has aliasing noises with some settings. Oddly, I have a simplified version of [cyclone/svf~] (lopass only) which does work well in Linux 64 bit. So one way or another I should be able to fix [cyclone/svf~]. Not at first sight however.
Katja On 2/26/13, Hans-Christoph Steiner <h...@at.or.at> wrote: > > I, for one, am very happy that you post on denormal issues! Its great to > have > these hard technical details worked out so that they don't trip us up in > future works :) > > On my Linux Mint Maya 64-bit machine, I get about 3% CPU before it hits the > denormal, then about 11% CPU. Hitting 1 jumps it back down to 3%. > > Is it worth trying bsaylor/svf~? I don't know if it works better in this > situation. I don't think cyclone has gotten many 64-bit fixes. As part of > the Pd-extended 0.43.4 release, I did do a push to fix a lot of 64-bit > issues > related to GUI stuff, but there are still a number of cyclone objects that > do > not have proper 64-bit array support. > > .hc > > On 02/26/2013 04:26 PM, katja wrote: >> Since last week I have my own Linux 64 bit machine. One of the first >> issues with Pd-extended on this machine was a strongly increased CPU >> load when audio input is temporarily shut off from parts of my patch. >> Subnormals! After three hours of puzzling I identified at least one >> offender: [cyclone/svf~]. >> >> Sorry that most of my posts to this list seem to be about subnormals. >> That's quite boring. But they're seriously hogging my CPU time like a >> swarm of grasshoppers. As I got this 64 bit machine so recently I >> don't know if the issue with [cyclone/svf~] exists in earlier Pd-E >> versions. Also, I can not understand why it happens, because the >> object is protected against subnormals with function PD_BIGORSMALL(). >> This works well on all my other systems. Moreover, it works well for >> other feedback delay objects like [lop~] on Linux 64 bit. >> >> I'd like to know if anyone can confirm the issue. I was planning to do >> my own state variable filter anyway, but it would be nice to have a >> working [cyclone/svf~] as well. Check the object with attached patch >> if you can. To be specific, I have the issue with Pd-E 0.43.4 for >> Debian Squeeze amd64 from nightly builds. The i386 build is not >> affected. >> >> Katja >> >> >> >> _______________________________________________ >> Pd-list@iem.at mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list >> > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > _______________________________________________ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list